Nope
Let's go Pikach/Eevee are the start of a 2nd core series of pokemon games. If successful they will likely follow on with a Lets Go Gen 2 game.
The aim is to have a 2nd series of core titles with Go intergration and more simple game mechanics for a greater audience.
The big reasons they are not core titles are
No existing Bank/Dex intergration
Entirely different capture mechanic
Pokemon having CP
If it was a mainline "core title" then they wouldn't have to talk about Pokemon 2019.
Let's go Pikach/Eevee are the start of a 2nd core series of pokemon games. If successful they will likely follow on with a Lets Go Gen 2 game.
The aim is to have a 2nd series of core titles with Go intergration and more simple game mechanics for a greater audience.
The big reasons they are not core titles are
No existing Bank/Dex intergration
Entirely different capture mechanic
Pokemon having CP
If it was a mainline "core title" then they wouldn't have to talk about Pokemon 2019.